hummed — to make a low, continuous, droning sound.
buzzed — a low, vibrating, humming sound, as of bees, machinery, or people talking.
droned — to make a dull, continued, low, monotonous sound; hum; buzz.
murmured — a low, continuous sound, as of a brook, the wind, or trees, or of low, indistinct voices.
sounded — Surgery. a long, slender instrument for sounding or exploring body cavities or canals.
chattered — to talk rapidly in a foolish or purposeless way; jabber.
clamored — a loud uproar, as from a crowd of people: the clamor of the crowd at the gates.
gossiped — idle talk or rumor, especially about the personal or private affairs of others: the endless gossip about Hollywood stars.
verb babbled
muttered — to utter words indistinctly or in a low tone, often as if talking to oneself; murmur.
blabbed — to reveal indiscreetly and thoughtlessly: They blabbed my confidences to everyone.
blurted — to utter suddenly or inadvertently; divulge impulsively or unadvisedly (usually followed by out): He blurted out the hiding place of the spy.
chatted — to converse in a familiar or informal manner.
gushed — to flow out or issue suddenly, copiously, or forcibly, as a fluid from confinement: Water gushed from the broken pipe.
ranted — to speak or declaim extravagantly or violently; talk in a wild or vehement way; rave: The demagogue ranted for hours.
yakked — to talk, especially uninterruptedly and idly; gab; chatter: They've been yakking on the phone for over an hour.